مسؤول التوظيف اتصل فيني عن متطلبات الشغل.

It means the recruitment officer, the hiring person, or the recruiter / hiring manager, depending on context.

Literally:

• مسؤول = person responsible / officer / official
• التوظيف = hiring / recruitment / employment

So the phrase is basically the person responsible for hiring.

Because this is an iḍāfa structure, often called a construct phrase.

In Arabic, when two nouns are linked like X of Y, the first noun usually does not take ال.

So:

• مسؤول التوظيف = the hiring officer / the officer of recruitment

Here:

• مسؤول is the first noun
• التوظيف is the second noun

Since the second noun is definite (التوظيف), the whole phrase becomes definite: the recruitment officer.

This is very common in Arabic:

• مدير الشركة = the company manager
• باب البيت = the door of the house
• متطلبات الشغل = the job requirements

اتصل is past tense (more precisely, the perfect form).

So it means:

• he called
• he contacted

Because مسؤول التوظيف is masculine singular, اتصل here means:

• The recruiter called...

If the subject were feminine, you would usually hear:

• اتصلت = she called

In Levantine Arabic, subject–verb order is very common in everyday speech:

• مسؤول التوظيف اتصل فيني...

This feels natural and conversational.

You could also say:

• اتصل مسؤول التوظيف فيني...

But in spoken Levantine, starting with the subject is often more natural, especially when you are introducing who did the action.

So:

• مسؤول التوظيف اتصل... = The recruiter called...

That is a very normal spoken pattern.

That is a very good question.

In Standard Arabic, you usually learn:

• اتصل بي = he contacted me / called me

But in Levantine, people very commonly say:

• اتصل فيني

So this is a dialectal preposition choice. It is normal in spoken Levantine, even though it is different from Standard Arabic.

Very roughly:

• Standard Arabic: اتصل بي
• Levantine: اتصل فيني

So if you are learning Levantine, اتصل فيني is something you definitely want to recognize and use.

Here, فيني is made of:

• في = a preposition
• -ني = me

So in this sentence, فيني means something like me after the verb اتصل.

In other words:

• اتصل فيني = called me / contacted me

A useful warning: in Levantine, فيني can also mean I can in other contexts.

For example:

• فيني ساعدك = I can help you

So context matters.

In your sentence, because it follows اتصل, it clearly means:

• contacted me

عن here means about or regarding.

So:

• اتصل فيني عن متطلبات الشغل = He called me about the job requirements

This is very similar to English:

• call someone about something

Other similar expressions you might hear are:

• بخصوص = regarding / concerning
• عن = about

So عن is doing exactly the job you would expect here.

متطلبات means requirements.

Its singular is:

• متطلب = requirement

So:

• متطلب = one requirement
• متطلبات = requirements

In this sentence:

• متطلبات الشغل = the job requirements / requirements of the job

Even though متطلبات does not have ال, the whole phrase is definite because it is another iḍāfa:

• متطلبات الشغل = the requirements of the job

For the same reason as مسؤول التوظيف: it is an iḍāfa structure.

So Arabic says:

• متطلبات الشغل = the requirements of the job

Not:

• المتطلبات الشغل

The first noun in an iḍāfa usually does not take ال.

Compare:

• كتاب الطالب = the student’s book
• باب السيارة = the car door
• متطلبات الشغل = the job requirements

It can mean either, but in this sentence job is probably the most natural translation.

شغل is a very common Levantine word. Depending on context, it can mean:

• work
• job
• stuff
• business
• things to do

Here:

• متطلبات الشغل most naturally means job requirements or requirements for the work/job

Compared with العمل, الشغل sounds more everyday and colloquial.

So:

• العمل = more formal / standard
• الشغل = more conversational / everyday

It is a mix, and that is very normal.

Some parts sound more formal / MSA-like:

• مسؤول التوظيف
• متطلبات

Some parts are clearly colloquial Levantine:

• اتصل فيني
• الشغل

This kind of mixing is extremely common in real spoken Arabic. People often use:

• formal or semi-formal nouns for workplace topics
• colloquial grammar and everyday words in the rest of the sentence

So the sentence sounds natural, not strange.

It is usually pronounced something like:

• mas-ʔuul

The little break in the middle comes from the hamza:

• مسؤول

So it is not one smooth syllable like masuul. There is a slight catch:

• mas-’uul

That said, in fast speech, the exact pronunciation can vary a bit by speaker and region.

Yes. Very easily.

Some possible alternatives:

• موظف التوظيف اتصل فيني عن متطلبات الشغل
• الريكروتر اتصل فيني عن متطلبات الشغل
• مسؤول التوظيف حكى معي عن متطلبات الشغل
• مسؤول التوظيف دقلي بخصوص متطلبات الشغل

A few notes:

• حكى معي = spoke with me
• دقلي = called me
• بخصوص = regarding
• ريكروتر = borrowed from English recruiter, used by some speakers

Your original sentence is perfectly good, but spoken Levantine offers lots of natural alternatives.